Here my stats results,
    netxmsd: show stats
    Objects............: 75948
    Monitored nodes....: 1034
    Collectible DCIs...: 1822
    Active alarms......: 3337

And here are my changes of server configuration values
    ThreadPool.Syncer.BaseSize: 10
    Events.Processor.PoolSize: 10
    ThreadPool.Syncer.MaxSize: 10
    DBWriter.DataQueues: 8
    ThreadPool.DataCollector.BaseSize: 30
    ThreadPool.Poller.BaseSize: 200
    DBConnectionPool.BaseSize: 15
    DBConnectionPool.MaxSize: 100
    ThreadPool.Agent.BaseSize: 10
    ThreadPool.Main.BaseSize: 15

I'm facing multiple issues:

• I found a lot of DCI readings are errors when I open last values tab (they change from time to time).
• I have nearly 90 network maps each map represents a device image with dci readings on it, many times when I open any one of them, I got load image error.
• Some of my SNMP devices lose their interfaces or I found only one- interface although when I run poll full configuration it returns all its interfaces again.
• I use web client, after a long time without login, when I try to login it gives me request time out, so I restart the server.